Operator
Familiarization—MicroLab
|
Instruction
C9
The
file
has
failed
a
block
header checksum
validation.
CA
The
file
has
failed
a
second checksum
validation.
EO
This error
indicates
that
the
file
could not be loaded
into
memory
due
to
a memory
failure.
—1__
This
error
indicates
that
the
file
tried to
load
itself
into
a
reserved
memory
space.
The next error
codes
might be
encountered
while
trying
to
load
a
file
onto
tape
CB
The
program
starting
address
you
entered
is
greater
than the
ending
address.
“SA”
must be a lower
number
than
“EA”.
AO
This error
indicates that the
MicroLab!
has
not
received
a
clear-to-send
(CTS)
signal from
the
cassette
port
ACIA.
Using
the
Expansion
Connector
At
the
rear
of
the
MicroLab
|
is
a
socket
that
will
accept an
expansion
cable.
The
expansion cable can
be
connected
to
circuitry
outside
the
MicroLab
|
for
additional
|/O,
memory,
or
whatever functions
may
prove useful.
The
expansion
connector
is
connected
to
the address, data,
and control
lines
of
the
microprocessor
or microcomputer used
in a
specific
personality
card.
The
lines
are buffered within
the
MicroLab
|
wherever
possible, but your
external
circuit
should provide line receiver
and
driver
devices
for
all
lines
to
insure
proper
line
loading and
signal
stability
within
the
MicroLab
|
The
expansion connector cable
(with
the
label
up)
plugs
into
the
socket at
the rear
of
the
MicroLab
|.
The
other end
of
the
expansion cable
is
shown
in
Fig. 2-7.
2-14
2827-9
Fig.
2-7.
Expansion
Connector
Cable.
The
top
row
of
connectors
in
the
cable
socket
are
all
odd
numbered.
The bottom row
of
connectors
are
all
even
numbered.
The middle row
of
connectors are
all
attached to
MicroLab
|
ground.
As
you
can
see
in
Fig.
2-7,
the
cable
socket
is
configured
with
all
the
odd numbered
lines
across
the
top,
and
all
the
even
numbered
lines
across
the
bottom.
The
schematics
at
the
rear
of
this manual show
what
signal
lines
are
attached
to
the expansion connector.
Summary of Contents for 067-0892-00
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